T.R | Title | User | Personal Name | Date | Lines |
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1647.1 | Check the Catalogues | MILKWY::WAGNER | | Wed Jan 02 1991 11:53 | 20 |
|
Aren't Jiffy and Slab the same thing?
One place to study the hardware possibilities is catalogs. Harken's
treatment of single-line looked interesting. Nicro-Fico also has (had?)
good ideas and sketches.
I find it funny that so many production boats send you out of your
nice, safe cockpit to probably the highest place on deck (at the mast)
to reef the main. When I reef, it's cuz the weather's getting at least
interesting; at most nasty, and a piching/rolling deck is the place to
avoid! Or at least send the most nimble crew...
Good luck; let us know what you do!
PS I'd bet the main's getting a little old & fat if the first reef
looks better than the whole- `course loose footed mains are popping up
all over... maybe that's the way to go.
Scott.
|
1647.2 | not simple | MSCSSE::BERENS | Alan Berens | Wed Jan 02 1991 12:49 | 41 |
| How big is your boat? How long do you sail reefed in what conditions?
In heavy weather the mainsail must be flat. This requires much tension
in the reef line. In the usual scheme the reef line is attached near the
outer end of the boom, goes up to and through the reef clew grommet,
back down to a turning block, and forward to the mast. This does give a
two-part purchase, but there is considerable friction at the grommet,
which makes getting sufficient tension in the reef line difficult to
impossible. We need a winch for even the first reef in our mainsail (a
bit more than 200 sq ft) to get a properly flat sail. I mounted a
self-tailing Barient 17 on the boom near the gooseneck. Expensive but
effective as the crewperson on deck can hold on with one hand and crank
the winch with the other. Before adding the winch reefing was a
miserable and hard job. Now it is just miserable. Our halyards are led
to the cockpit, which is fine when two crew do the reefing. For
singlehanding, I'd move the halyard winches to the mast.
Single-line systems (ala Harken) look good in theory, but not in
practice, I think. First, there is even more friction as the reef line
goes through two grommets (tack and clew), so a winch is even more
necessary. Second, you need at least three turning blocks per reef (yet
more friction). Third, it is rather difficult to rig more than two reefs
(we have three as should anyone sailing offshore). Fourth, and most
important: The reef line is very long. The load on the line varies quite
significantly as the boat pitches/rolls and as the wind pressure varies
(in the troughs of big seas the wind can be very light). Since the line
is under much tension, it will chafe at the grommets, and quite likely
chafe quickly (an hour or two may destroy the reef line in the wrong
conditions). If we are going to be reefed more than a few minutes in
rough conditions, we pass a lashing line through the clew grommet and
around the boom two or three times. We then remove the tension from the
reef line. Adding the lashing isn't particularly easy or safe, but it is
necessary (I've replaced two almost chafed through reef lines because of
not using a lashing). If you faithfully use a lashing, a single line
system might be marginally easier, but it will be much more expensive. I
find it interesting that none of the catalogs ever mention chafe. I
first read about the problem and solution in Hal Roth's After 50,000
Miles. My experience has been the same as Roth's.
Alan
|
1647.3 | | STEREO::HO | | Wed Jan 02 1991 13:41 | 59 |
| There some discussion of this in an old note from a few years back but
I've forgotten the number.
Unless your boat has a furling mast or boom, slab/jiffy reefing (right
Scott, they're the same) is pretty much the only way to go. Some older
boats came equiped with roller reefing booms but the inevitable
corrosion at the geared gooseneck usually made reefing a questionable
undertaking. With no clew attachement and a big lump at the tack from
the rolled up boltrope, sailshape was usually hopeless. If your sail
has no battens, perhaps your boat was one of these. Part of the reason
roller furling went away is the hard time it has dealing with battens.
The concept of jiffy reefing is simple. One or more matched sets of
tacks and clews are located above the foot of the sail. As the wind
pick up, the sail is lowered and the next set of tacks and clews
engaged. A combination outhaul/downhaul line is usually pre-reeved
through each of the extra clews. If this same line is also lead to
pull down the tack, it's called a single line reefing system. If the
reefing line is not lead to the tack, a ring lashed through the new
tack is secured over reefing "horns" at the gooseneck to secure the
shortened luff. Or, alternatively, the regular cunningham tackle, if
the boat is so equiped, can be used to hold the tack down.
How to arrange the blocks, lines, winches, and cleats to make this
happen is the subject of some differing opinions. I'll list my biases.
It takes a lot of tension on the clew to suck the belly out of the sail
in heavy air. I like to have a winch available to provide this. A
cabin top winch can be bigger than a boom mounted one. And you get
more body english on the cabin top winch. Plus the spagetti you get
with a boom mounted winch is intolerable, especially when you want the
sail reefed in a hurry. Besides, you usually already have a cabin top
one.
High tension means high friction on all the turning blocks. Ball
bearing blocks are the only way to go. That's not always a
controllable for the sheaves at the outboard end of the boom if you
have internally lead reef lines, but for the one at the gooseneck, I
wouldn't consider anything else.
High tension means strength is needed but friction mandates the
thinest smoothest line that'll do the job. Not a bad place for spectra
or kevlar. A very poor application for oversized fuzzy braid.
I haven't seen a working one line reefing system yet although I've seen
several attempts. The biggest bugaboo is the turning block at the
gooseneck to lead the line up to the new clew. It's hard to get a fair
lead there. But with enough persistence, and access to a bridgeport
miller to conjure up the required custom hardware, anything is
possible.
One thing about single line reefing I don't have an answer for is why
it's perceived as safer. When it gets desparate out and you need to
set the storm jib and trysail, how are you going to do that from the
cockpit?
- gene
|
1647.4 | perfect for the boatshow | AIADM::SPENCER | Commuter from the other Cape | Wed Jan 02 1991 15:23 | 13 |
| >>> I haven't seen a working one line reefing system yet although I've seen
>>> several attempts.
These were invented by salespeople anxious to calm the fears of largely
ignorant potential buyers. Make it look simple. Many of those buyers
(and boats, for that matter) ought to tie in the first reef at 15 knots
anyway, so friction and sail shape really aren't that much of a problem.
No one buys a boat dreaming of gales. To look at a single 1/4" line and
be told by the salesperson that that's all it takes to reef, is to inspire
the unwitting to do the foolish.
J.
|
1647.5 | Tricks on Slab/Jiffy Reefing | NAS007::WINTERS | | Wed Jan 02 1991 17:31 | 43 |
| One problem I have, which Alan alludes to, is that the reef grommet
ring on the luff of the main pops off the reefing horn/hook before I get
back to the cockpit to tighten the tension on the halyard. Aside from
trying to keep a little tension by hand as I scramble back to the
cockpit (encumbered by a safety harness of course), the trick I use now
is to use about a 1/4" wide strip of duct tape wrapped on the end of
the horn/hook. This builds up a little "ball" of tape which helps keep
the ring on the hook.
I've also tried lashing for the reefing grommets on the leach, but I've
not had success. What happens is that I can't get enough horizontal
(aft) tension on the lashings and the main slowly loses shape as the
lashing slides forward on the boom. I've thought about adding some
small padeyes on the boom through which to run at least one round of
the lashings, but I've never gotten around to it.
Another trick with slab/jiffy reefing is to mark the halyard (in calm
weather) at the point where, when the main is lowered to that point, it
is easy to hook the reef ring onto the reef horn/hook. Lowering the
main too little and you have to make two trips to the mast (or shout a
lot to your crew if you're so lucky); lowering it too much and the
tendancy to pop off the horn/hook is all the greater. Of course with
enough practise you can eyeball where the head of the main is with
respect to the spreaders.
Finally with respect to chaffing the reef lines again, watch out for
chaffing them against the outhaul car and/or tackle. Chaff protection
on the outhaul car is pretty obvious since it happens more or less in
front (or above) your nose, but the tackle got me! My outhaul has a
3-1 purchase block and tackle INSIDE the boom. The first season I had
the boat I didn't even know it existed and was very surprised when the
reef lines looked "eaten" in the MIDDLE of the lines when I pulled them
in the fall. What had happened is that they weren't fairly led through
the boom and interwove a bit through the outhaul's block and tackle
system. Of course this only can happen when your reef lines also run
through the boom, but the moral here of watching everywhere for chaff
is the real message.
-gayn
|
1647.6 | Maybe try a D-ring instead of a hook. | MAY13::BAILEY | Stephen Bailey | Wed Jan 02 1991 18:53 | 7 |
| Re: hooking the tack grommet onto the horn.
The boat I sail has a D-ring instead of an open hook. I can't see any
obvious disadvantages with the setup, and it avoids the aforementioned
problem.
Steph
|
1647.7 | | STEREO::HO | | Thu Jan 03 1991 09:18 | 40 |
| The reef tack does have a tendency to slip off just when you don't want
to. Even with the reefing horns that are formed into a 270 deg loop,
the wild flapping that ensues when you drop the halyard makes for
pretty haphazard retention. Plus I always have to stare at the horns
for a moment to figure out how to get the tack ring into the curlicue.
Using a halyard with the reef points marked on it combined with a
cunningham block and tackle makes life much easier. Just drop the
halyard to the mark and cleat it off. Then hook the cunningham into
the new tack and yank on it until the luff is tight. This works best
if the mainsail has its boltrope in the mast slot. For a mainsail with
slides, using the cunnningham tackle to pull the reef tack down to the
horns and then releasing it slightly to engage the tack ring and horns
can alleviate the pre-release problem. The tension on the luff will
pull the reef tack back up into the horns. Obviously you need a no
nonsense cunnningham tackle to do this. 6 to 1 or better. This costs
a few bucks and the ball of tape trick sounds more cost effective if
you don't have a need for such a cunningham adjuster otherwise.
If the clew lashings are slipping, how about tying them behind whatever
is securing the dead end of the reefing line. It's usually a eye
strap on the boom or the end of the reefing line itself tied around the
boom through a hole in the mainsail foot. Also, releasing some but
not all of the tension should help. I believe this problem usually
occurs when internally lead reef lines are used with the turning blocks
at the end of the boom. As the reef clew nears the boom, the component
of pull in the vertical direction diminishes. A lot of tension is
needed to get the sail down to the boom and that's the source of much
of the wear on the reefing line at the clew grommet.
If external turning blocks are used, they can be located closer to the
gooseneck directly under where the reef clew will touch the boom when
the sailshape is flat enough. A lot less tension is needed for this
system and the need for the lashing is reduced. But, since you'll be
tying up the foot of the sail anyway, it won't hurt to do it. The
disadvantage is that now there is all this line hanging off the boom
and a turning block to imbed itself into heads of crewmembers in an
accidental gibe.
- gene
|
1647.8 | someday I'll get it right | MSCSSE::BERENS | Alan Berens | Thu Jan 03 1991 15:22 | 69 |
| re .3:
>> It takes a lot of tension on the clew to suck the belly out of the sail
>> in heavy air. I like to have a winch available to provide this. A
>> cabin top winch can be bigger than a boom mounted one. And you get
>> more body english on the cabin top winch. Plus the spagetti you get
>> with a boom mounted winch is intolerable, especially when you want the
>> sail reefed in a hurry. Besides, you usually already have a cabin top
>> one.
Hmmm. I disagree. You get even more spaghetti with the winch on the
cabin top -- the reef lines are just that much longer. And you need two
additional turning blocks, one at the gooseneck and one on the deck,
which means more friction and more cost. Our boom-mounted winch is
positioned so that the crewperson can brace himself/herself against the
mast when reefing. We used to use a cabin top winch. UGH! The tangle of
lines was awful and it was extremely hard to hold on while kneeling on
the deck. Our boom-mounted winch is the third design we've tried, and
the first we've liked.
>> High tension means strength is needed but friction mandates the
>> thinest smoothest line that'll do the job. Not a bad place for spectra
>> or kevlar. A very poor application for oversized fuzzy braid.
Kevlar, and possibly Spectra, are very intolerant of tight radius bends
(ie, going through the clew grommet). I would not use either for this
reason. They may also be less tolerant of chafe than dacron.
re .5:
>> One problem I have, which Alan alludes to, is that the reef grommet
>> ring on the luff of the main pops off the reefing horn/hook before I get
>> back to the cockpit to tighten the tension on the halyard. Aside from
>> trying to keep a little tension by hand as I scramble back to the
>> cockpit (encumbered by a safety harness of course), the trick I use now
>> is to use about a 1/4" wide strip of duct tape wrapped on the end of
>> the horn/hook. This builds up a little "ball" of tape which helps keep
>> the ring on the hook.
Our hooks are round bar stock, one on each side. We connect the hooks
with a length of clear plastic tubing led under the boom. Remove the
tubing from a hook, put the tack ring over the hook, and slide the
tubing back on. Seems to work, plus the tubing keeps things from
snagging on the hooks in normal life.
>> Another trick with slab/jiffy reefing is to mark the halyard (in calm
>> weather) at the point where, when the main is lowered to that point, it
>> is easy to hook the reef ring onto the reef horn/hook.
Ah, stealing my ideas again (big grin)! We have added red whippings on
the (white) halyard to mark the three positions for reefing. We lower
the sail until the tack ring is two or three inches about the reef
hooks. Since our halyards are all rope, it is easy to stretch the
halyard enough to get the ring over the hook. Halyard tension (the
halyard is held by a sheet stopper) keeps the ring on the hook. No
cunningham tackle is needed (score one for all rope halyards -- I
wouldn't use wire-rope halyards if they were given to me).
Designing a satisfactory mainsail reefing system isn't easy. It takes a
lot of careful thought, design, and some experimentation. We've used
three designs. The original design from the spar maker was dreadful.
Dreadful because the wrong hardware was used as much as the wrong
design. Our current design uses several custom-made bits and pieces and
is reasonably satisfactory. I spent several days hunched over a drafting
board designing it and several more days making mockups to be sure it
would work. Custom-made hardware is very expensive, either in time or
money. The design needs further modification before heading off around
the world.
|
1647.9 | I like the Cabin top Winch | STEREO::HO | | Thu Jan 03 1991 17:09 | 22 |
| Re. the boom mounted reefing winch. I had one of these on the previous
boat. Because of motion induced by sail flogging and my own weight on
the winch handle I found it difficult to get good purchase. And if we
were on the wrong tack with the boat heeling, which it usually was,
the winch had to be operated with the grinder underneath it facing up.
That coupled with the boom moving around with a will of its own made
for discomfort on the part of the operator. Re-leading the reef line
to an existing cabin top winch made life much easier. I suppose we
could have re-located the boom winch closer to the mast but it seemed a
half measure and we had too many holes in the boom anyway.
Some custom hardware and ball bearing blocks solved the friction
problem.
We went to kevlar reefing lines when the dacron ones kept breaking.
They never broke but we kept switching end for end to even out the
wear.
I wasn't kidding about the Bridgeport miller. We needed it for the
custom gooseneck fitting.
- gene
|
1647.10 | more discussion ..... | MSCSSE::BERENS | Alan Berens | Thu Jan 03 1991 17:39 | 36 |
| re .9:
>> And if we were on the wrong tack with the boat heeling, which it
>> usually was, the winch had to be operated with the grinder
>> underneath it facing up.
Ah, do we have a racer speaking here? Yes, with a boom-mounted winch,
reefing on one tack is much easier than the other. Being a cruiser, we
always reef on the starboard tack since our winch is on the starboard
side of the boom.
>> That coupled with the boom moving around with a will of its own made
>> for discomfort on the part of the operator.
Allowing the boom to swing from side to side is quite dangerous. We have
two four-part vangs (preventers) permanently rigged, one to each rail.
We raise the boom with the topping lift and then pull both vangs tight.
This keeps the boom from swinging from side to side, making reefing
easier, faster, and much safer. We also never sail off the wind without
the leeward vang snugged tight to prevent an accidental gybe from doing
injury or damage.
>> I suppose we could have re-located the boom winch closer to the mast
>> but it seemed a half measure and we had too many holes in the boom anyway.
Our winch is a couple of feet from the mast. Any competent welder can
make holes in aluminum booms disappear. Our boom has had a number of
holes filled and new ones installed. Of course, a boom isn't too
pretty after welding, but a bit of paint hides all. Oh, your boom is
anodized?
It would appear that Gene and I would agree that getting the right
reefing system isn't easy. What is right on one boat may not be right on
another.
Alan
|
1647.11 | more ........ | OTOA01::MOWBRAY | from Newfoundland | Fri Jan 04 1991 08:34 | 27 |
| My current system is essentially as described - single line - (no
winches) with turning blocks on the boom and horns at the gooseneck but
no cunningham. By the way the comment about roller reefing/no battens
struck home ... the original owner of the boat must have thought that
was a good idea as she was set up that way I think he missed one thing
though - the main sheet is on a bail halfway down the boom. I have not
ever tried this but I suspect that the main sheet would serve very well
to keep the sail tidy as you roll it up. The sheet would certainly not
be useful for anything else !
My reason for wanting to re-do the system is to minimize time at the
mast. My boat is 30' steel - cutter rig and I typically do not start
to think reefing until the wind pipes up over 20 kts or so. I do a
fair amount of sailing by myself or with my wife and am not keen on
leaving the cockpit for any great length of time.
I think I like the idea of installing a cunningham-type arrangement
with a tack hook at least double purchase pulley on the deck, use a long
line to lead this back to the cockpit and then mark the halyard and
also bring the reefing line back to the cockpit. This way I could drop
the halyard to the marked spot, tighten up the cunningham and then
tighten the reefing line all from the cockpit (if I remember to
install the tack hook when the main is raised) for a second reef I
would have to slacken off the cunningham to the 2nd reef point,
i.e. leave the cockpit. but then return and do the same again.
Shaking out the reef would then appear to be failry simple, I would
just slacken cunningham and reef line and raise the halyard.
|
1647.12 | | MSCSSE::BERENS | Alan Berens | Fri Jan 04 1991 16:12 | 25 |
| re .11:
Either I've misunderstood what you intend to do, or you've overlooked a
key point. Simply pulling the reef tack down to the boom with a block
and tackle isn't going to work very well. The tension on the reef line
through the clew will pull the tack grommet away from the mast,
resulting in a very baggy, poorly reefed sail. You have to keep the reef
tack firmly in place at the gooseneck, ie, you have to hook the reef
tack grommet over hooks (or something) at the gooseneck. This requires a
trip to the mast. Also, bringing the tack and clew reef line to the cockpit
will require that the lines be quite long. You are virtually certain to
have severe chafing problems at the reef grommets and probably
elsewhere. Don't overlook, too, that properly reefing the sail requires
tying the intermediate grommets (the ones in a horizontal row between
the tack and clew) to the boom. This cannot be done from the cockpit.
I am not exactly thrilled about clambering around the deck reefing our
mainsail either, but it is worse in my mind than in reality. If you keep
the boom from swinging, use a safety harness, and keep the boat pinched
but not dead into the wind, mainsail reefing isn't so bad, especially
when you work from the high side. It gets easier and faster with
practice. Trying to get everything back under control when a reef line
breaks can be a real problem.
Alan
|
1647.13 | Source for small winches? | BOMBE::GERSTLE | Carl Gerstle | Mon Jan 07 1991 08:33 | 11 |
| Having given reefing a fair amount of thought for my C&C 26 (Alan, you
listening?) I'd like to add a boom-mounted winch for the reefing lines
but there is a problem with that. I have been unable to find a winch
with a small enough mounting base to fit the vertical section on my
boom. At this point, I don't want to think about making a custom plate
which mounts to the boom and forms a pad for the reefing winch.
Anyone know of #4 winches? The #6 winches I have found are all at least
a � inch too large at the base mounting holes.
Carl
|
1647.14 | making a pad isn't hard | MSCSSE::BERENS | Alan Berens | Mon Jan 07 1991 09:15 | 16 |
| re -.1:
I think you'll need a winch mounting pad.
Making a winch mounting pad is not difficult, just somewhat time
consuming. Get a piece of marine plywood and cut it into a circle with
the same diameter as the base of the winch. Coat the plywood with a
couple of coats of epoxy. Sand smooth. Thoroughly wax an area on one
side of the boom. Clamp the plywood to the boom where you want to mount
the winch. Mix a batch of epoxy and add some high density filler. Force
the epoxy into the gap at the top and bottom of the plywood pad. After
the epoxy is hard, remove the pad from the boom and sand it into the
shape you want. Paint it the color of your boom to protect the epoxy
from UV damage. Drill the mounting holes. This is more or less how I
made the pad for our boom-mounted winch. Two years later I'm still
delighted by how nice it looks.
|
1647.15 | A racers view | AKOCOA::DJOHNSTON | | Mon Jan 07 1991 09:38 | 37 |
| I have been reading this note and have to agree with Gene on a couple
of key points. Not because we're racers, but because of what I believe
makes sense.
First, all of our winches are on the cabin top and usable from the
companionway. This gives the grinder a safe and secure place to stand
and puts the winch at waist level for max purchase. The extra friction
is easily alleviated with decent blocks. The "spagetti" of unused reef
lines are just kept coiled by their stoppers when not in use or thrown
down the copanionway. Ideally, (next year) they will go into sheet
bags that hang in the companionway by sliding into the hatch track.
The halyard is also right there and premarked. To reef is a two person
job no matter what system you have unless you want to do it in steps.
With two, one stands at the mast and the other in the comanionway. The
grinder eases the halyard to the mark very quickly to reduce flapping
time and the mastman slides the grommet onto the horn. The grinder
then quickly takes up the slack and the mastman comes aft (or goes back
to the rail). At any rate the mastman is used for less than thirty
seconds.
When the halyard is good and tight, the grinder starts to take up on
the clew while the mainsheet is eased to him. When sailing upwind, the
flapping of the boom is all to leeward and not a problem. Once the
clew is taken up we put a strap around the boom through the grommet and
connect the outhaul to the grommet. Then take up on the outhaul and
ease the reefing line. This is all done if the reef is going to be
there a while.
We do it the same way whether racing or cruising. Takes a minute or so
either way.
The second point I agree with Gene on is the use of spectra or kevlar.
The reduction in stretch is worth it. I wouldn't use it if I were a
world cruiser and would gladly trade perfomance for durability.
Dave
|
1647.16 | | VAXUUM::FACHON | | Mon Jan 07 1991 14:23 | 4 |
| Find a good reef, wait for a windy day, get about 500 yards
upwind and pop the chute.
;)
|
1647.17 | the answer! | MSCSSE::BERENS | Alan Berens | Mon Jan 07 1991 14:29 | 12 |
| re .15:
Dave, sounds like a well-thought out system for your boat. As a cruiser,
though, I would not feel comfortable having my companionway open in
rainy or rough weather, especially when going to the second or third
reef. A wave down my companionway will probably drown all my electronics
and the galley as well. Not a cheery thought.
I'm surprised nobody has yet suggested the obvious solution to staying
in the cockpit while reefing the mailsail ...... Hood Yachts Systems has
just what you need -- a Stoway mast. Hydraulic and electric drives
optional.
|
1647.18 | Keep it Simple | STEREO::HO | | Mon Jan 07 1991 18:06 | 65 |
| Re. the boom winch for a C&C 26. I'm not sure that a winch is all that
useful for reefing the main on a boat of this size. The systems that I
described in my earlier replies where on boats that were raced hard.
Having a winch on the reefing lines allowed us to keep the main drawing
as it was being reefed. This was particularly important for the
flatening reef. We didn't even let off on the mainsheet to put that
in. The reefing winch actually had enough power to stretch the sail
and bend the mast. Without heavy duty hardware doing that would have
been a real gear buster.
For a cruising boat, especially a smaller one, there is no need to
apply that kind of muscle. I think the simplest system that will do
the job is the one that is most likely to work correctly when you need
it to.
A system I like is one that was retrofitted to a cruising boat
donated to a school I attended. Originally outfitted with a roller
reefing boom, a decade of hard use and casual maintenance had done a
job on the gooseneck crank. It wouldn't roll anymore. At least not
with vise grips and no one could find the handle that was supposed to
fit onto the mechanism. The decision was made to install jiffy
reefing.
The boat didn't come with a treasure chest in the bilge to finance
buying a new winch and no one we knew had any lying around. Anyway, the
round boom section meant that a special bracket would have to be made.
There were enough other things that needed more urgeant attention so we
looked for a simpler solution. One thing we had in abundance was lots
of old parts salvaged from generations of college racing dinghies.
The low budget solution was this. Two cheek blocks were mounted on the
side of the boom just aft of where each reef clew lay when in the
reefed position. The reefing line was tied on the retaining post of
the cheek block, led under the boom, up to the reef clew, down the
other side to the sheave of the cheek block, and forward UNDER the
boom. About 2-3 feet from the gooseneck the reefing line went through
a cast aluminum friction cleat with an integral fairlead also mounted
on the underside of the boom. About 3" ahead of that the tail went
through a Haarken bullet block suspended from an eye strap and ended
in a figure 8 knot. The cleat was self activating. The bullet block
allowed pulling in any direction and also kept the reefline in the
cleat. For the tack, we just used a cleat under the gooseneck with
a string on it for tying it off.
The reefing procedure was refreshingly elegant. When the time came to
do it, uncleat the mainsheet, walk into the companionway, lean forward,
grab the tail of the reef line and start pulling. The boom would rise
until it met the clew, harmlessly flogging above everyone's head.
Because the operator was pulling down it was easy to use body weight
to get the line tight. Next, go up to the mast and lower the halyard
till the tack was within 6" of the gooseneck and tie the grommet off
with the string. On the way back to the cockpit, another yank on the
reef line tail got the last bit of slack out. Then just trim the
mainsheet and continue on your way. With the omnidirectional pull on
the reefline we could always work from the middle or high side.
This was on a boat with a 15 boom. It should work as well on a smaller
boat. Since many of the students normally on board were new to
sailing, it was important to have a system that didn't take a lot of
explaining or prior experience. Anyone can yank a string. Not
everyone knows which way to twirl the line onto a winch. As for
simulaneously tailing and grinding - not even engineering wizards could
figure that out.
- gene
|
1647.19 | What I do now. | OTOA01::MOWBRAY | from Newfoundland | Tue Jan 08 1991 07:55 | 16 |
| .18 is pretty similar to what I do now, although I just have a regular
cleat mounted on the boom Vs. the jam cleat with integral fairlead. In
reading .18 I realised one of my problems is simply that the cleat
is mounted too far aft on the boom. That is one of the reasons that I
feel uncomfortable when reefing as I have to balance against the boom
while standing on the cabin top but more than arms reach away from the
support of the mast or shrouds.
The other thing that I do is use the topping lift (which also leads
back to the cockpit to lift the boom (sheet loose) so that the clew
comes down easily. This also hase the advantage of lessening the force
needed for the outhaul. Once the clew is secured I then move to the
mast and put the tack on the hook and then return to the cockpit to
tighten the halyard, loosen the topping lift and tighten the sheet,
finally (depending how long the reef will be in) I then tidy up the
bag under the boom.
|
1647.20 | And don't forget to practice | RIPPLE::ROTHENBER_DA | | Tue Jan 08 1991 10:31 | 16 |
| Perhaps an unnecessary bit of advice: No matter how your reefing
system is set up, Practice, Practice, Practice.
As with many situations, even the simplest procedure becomes complex
when elements of danger are added. Practice in no or low pressure
situations. Reef at the dock in no wind. Reef at the dock in a light
breeze. Reef in the bay in no wind. Surprise your crew by calling
for a reefing drill in 10 kts.
Familiarity with your reefing system will make reefing a less
threatening prospect when you really need to do it. You will get
an added benefit of finding out what is wrong with your system
before you actually need it. An increased level of comfort will
also save a bit of wear and tear on gear as tucks can be confidently
and easily put in the main at lower wind speeds.
|
1647.21 | .18 idea with 2:1 or 3:1 advantage | AIADM::SPENCER | Commuter from the other Cape | Tue Jan 08 1991 12:50 | 41 |
| Here's a simple variation on the system in .18 that might make the
difference in decided "to winch or not to winch". Make a two-part system
along the boom, more or less as follows:
The clew reefline is pretty much as described; tying the bitter end around
the boom where possible is an even simpler and stronger arrangement than
tying to part of the cheekblock. To differentiate parts of the system,
I'll call the part of this which you'd have to pull after it exits the
boom-end (aft end) cheekblock the reefing pennant.
Forward on the boom, on the same side as the reefing pennant a hauling
line is deadeyed in some appropriate fashion. That line runs aft to a
small moving block to which the reefing pennant is attached (a becket
block, isn't it?), and then the line runs forward again to your favorite
cleating system on the boom near the mast. Voil�!...2:1 mechanical
advantage.
Want 3:1 advantage? By using a becket block with attachment points on
*both* ends, the hauling part could deadend on one end of the moving
becket block, turn at a cheekblock forward, go back and turn at the becket
block, and finally forward to cleat. Obviously, you can carry this as far
as you want to go, and fit something with 8:1 for a 50-footer if so
inclined. At the cost of much more line to handle and coil/store, among
other minor disadvantages.
Obviously, working out the precise locations for each mounted piece of
hardware would be critical to success, but not at all difficult to do.
I've speculated that a shorter hauling tackle might be possible if one can
have an easily and securely attachable reefing pennant, so that the first
several feet of line (which take little effort to haul in) could be brought
forward to the becket block and hauled in by the tackle for the last
couple but critical feet. Maybe this would be worth it in a couple cases,
though I'd rather have the whole thing set and ready to go by just hauling
on the line.
Also, I'd want to sew a leather cover over that moving block to protect
the boom's paint or varnish.
J.
|
1647.22 | single person reefing | EPSYS::SAMUELSON | | Tue Jan 08 1991 15:20 | 27 |
| A single handed reefing system: I've seen such a setup, but have never used
one under stress. So this is a proposal without a recommendation...
o Start by dead-ending a line on the boom directly under the clew reefing
cringle on the stbd side.
o Run the line up through the clew cringle and down to a cheek turning block
mounted on the port side of the boom as far aft as possible and specifically
aft of the fixed attachment point used in the above step. The offset lets
you tension the foot of the main.
o The line then is fed to a second cheek block mounted at the front of the
boom on port directly under the tack reefing cringle.
o The line then goes up through the tack reefing cringle at the luff of the
main then back down to a third cheek block mounted on the stbd side of the
boom and oposite the secon block used in the above step.
o After this, the line is run aft to a self tailing winch in the cockpit (how
this is done is an exercise left to the student).
o The main halyard is also run aft to an adjacent self tailing winch in the
cockpit.
Thus, one can slowly ease the main halyard with your left hand while grinding
in on the reef line with your right hand. The reef line at the clew will pull
the clew down and aft. This line at the luff will pull the tack down and hold
it next to the goosneck. The more you tension the reef line, the tighter the
foot becomes. The luff tension is then set with the main halyard.
Note that you can rig multiple reef points with multiple lines and sets of
blocks if you so desire.
|
1647.23 | back to the drawing board? | MSCSSE::BERENS | Alan Berens | Wed Jan 09 1991 09:56 | 25 |
| re .21:
John, what you suggest might work well for the first reef, but I think
not for a second or third. Since the reef line/pennant/whatever goes
from the boom up to the reef clew and back down to the boom, you have to
pull a length of line equal to twice the distance from the boom to the
reef clew. For a typical 30 or so footer with a high aspect mainsail
this might be twelve or more feet for a second reef. The boom is likely
shorter than this (ours is eleven feet), especially since you'll need
some room for blocks, cleats, etc. It might be possible to devise a way
to attach the block to the reef pennant after some of it has been hauled
in, but the only ways I can think of at the moment either aren't
practical or have some other significant drawback. At least a winch is
simple. By the way, we use essentially what you suggest for our unreefed
clew outhaul with a 3:1 purchase. Works quite nicely, and it's all
hidden inside the boom.
re .22:
The drawings in the Harken advertisements show that you must modify your
mainsail by moving the tack reef grommets away from the mast a ways.
Harken wants $275 or so for the hardware for a 30 some footer (not
including lines, sheet stoppers, sail modifications, etc). You can buy a
nice winch for rather less and have a simple(r) system without worrying
about chafe.
|
1647.24 | How About Reefing the Jib? | STEREO::HO | | Wed Jan 09 1991 13:16 | 28 |
| Having flogged the topic of reefing the mainsail to death, what is the
cockpit potato's solution to shortening the headsail via remote
control? Is a roller furling headstay the only solution? On the boats
I've sailed on that were so equiped, we usually unrolled and changed
the headsail to a smaller one before leaving the mooring if the breeze
looked like it might build. One friend just rolls up an appropriate
amount of sail when he feels the need but I've always felt nervous
about that. If the furling line breaks and the drum unrolls, then the
choice is to sail with the whole genoa up or to take the whole thing
down (assuming it comes down at all).
How 'bout us poor folk with hank on jibs. Has anyone ever thought out
a remote reefing solution for us. I could see something like an extra
long cunningham to shorten the luff but what about the clew? Maybe a
permanently reeved set of sheets on the reef clew run through a second
set of blocks? Sounds like that would snag with every tack when in the
unreefed state though. Without a solution on the front end of the boat
our goal of putting roots down in the cockpit will remain ever elusive.
For those who have a desire to learn what it is like to reef in square
rigger, I recommend the book "Tuning the Rig" by Harvey Oxenburg. Ivy
league desk jockey with acrophobia learns sailing on the Regina Maris.
Those who have failed to reef in time and have, as a result, dipped
their spreaders, know what a thrilling sensation it is. Imagine
sitting on the spreaders while it's happening. Worth writing a book
about. Despite the title, it has almost nothing to do with rig tuning.
- gene
|
1647.25 | Reefing a Big Rig | GUIDUK::RADKE | | Wed Jan 09 1991 16:48 | 24 |
| Re: .24 and .17
Putting cost aside, the Hood Stowaway mast system is about as simple
and easy to sail and reef as it gets. We have this on Viking Rose
which has a tall cutter rig with 1,281 square feet of sail area (472
sq. ft. main). We have the Hood Seafurl II system on the jib and
staysail. My wife single hands the boat when necessary without
leaving the center cockpit.
Our Stowaway mast has the electric drive which we control from the
cockpit and use perhaps 30% of the time. For manual operation we use
the winch-handle operated manual furling mechanism located on the
forward side of the mast. Although this can be a one person
operation it is usually easier for one of us to control the main-sail
(not boom) sheet from the cockpit while the other cranks in the sail.
Reefing the main is usually a 30 second operation.
We have found this system to be safe and reliable for the two years
that we have sailed her. It has much to recommend it for short
handed cruising. This system has taken much of the personal risk,
drudgery and hard work out of sailing, and has especially increased
my wife's confidence and enjoyment in sailing a larger boat.
Howard
|
1647.26 | Use a Zipper? | NAS007::WINTERS | | Thu Jan 10 1991 08:43 | 10 |
| I remember reading an article awhile back by one of the big time
cruising authors (I forget the name) who cut his jib into two parts
and reconnected it with a big zipper! With the addition of an
additional grommet for a second clew, he converted his genoa into a
yankee. I thought about writing a tongue-in-cheek letter to the editor
suggesting that this cruiser put a zipper in his main to give him a
reverse roach, but ... .
-gayn
|
1647.27 | Roll yer own... | MILKWY::WAGNER | | Thu Jan 10 1991 12:18 | 28 |
|
I'd say the roller is pretty much the only show in town, Gene- I
did, however, have a jib with 2 clews and reef points (!) on my old
Explorer class daysailer ( a chunkier version of the O'Day) which I
used maybe once or twice. You bundle the extra cloth with imagination.
It was more Yankee-ish, so you could see under it, and I guess cut down
on snags. It was easier just to drop the whole thing and zoom back
under main- with only 17' of hull, I never ventured out too far, altho
pointing was more possible with both sails reefed. Don't think I've
seen another sail quite like it since, just jibs with cunninghams.
I've read Doyle's glossy on `Sea-Foam' which was shaped
closed-cell, I guess, that they stuffed into the luff of their roller
jibs. The theory went something like the sail would flatten as you
rolled it, so one jib was all you ever needed. Does anybody have one of
these gennys? Do they work at all? I'm skeptical, but the day will come
when lazyness will overtake the need for speed, and I hope not to
convert to trawlers any earlier than necessary. Another way out is
something like the Freedom, with small headsails and lazyjacks et al,
out back...
Speaking of cynicism, I've still not found a single-line reef
system that would be accorded trust comparable to hooking the reef tack
on the horn. Also, you still need to shape a main, even when reefed. No
reason to slow down just cuz it's blowing!
Scott.
|
1647.28 | cutters, my favorite rig | MSCSSE::BERENS | Alan Berens | Thu Jan 10 1991 12:21 | 39 |
| re .24:
One answer to your questions about headsail reefing is the cutter rig.
We have a true cutter (mast approximately amidships as compared to a
double headsail sloop with the mast rather further forward). With
downhauls rigged, either hanked-on headsail can be dropped and kept on
deck (though not too neatly) without leaving the cockpit. Various
combinations of yankee jib, staysail, and (un)reefed mainsail serve in
winds from 10 to 50 knots. Above that it is time for storm jib and
trysail. (Even though I love my boat, and would buy another
cutter-rigged boat, cutters do have some disadvantages, but then so does
every rig.)
Another part of the answer lies in the hull design. Our boat has a very
smooth, gentle motion even in quite rough seas. Working on the foredeck
to change or lash down a sail is not difficult, and as a result we often
do not bother with the downhauls. This might not be true of lighter,
flatter bottomed, narrower-bowed boats. Also, since our boat is very
stiff (we've sailed close hauled with double reefed main and 100% jib in
40 knot gusting to 50 knot winds) sail changing is not needed very often
(except in light winds when we use our genoa, which I am not fond of for
several reasons).
I am slowly becoming convinced that a strongly built, well-maintained
roller furling system is acceptable for offshore use on a cutter,
provided that it is used on the headstay only and only for furling, not
reefing. One of the less delightful parts of my trip back from Bermuda
on a Seguin 44 was the breaking of the roller furling line late at night
beating into a 30 knot wind in the quite rough Gulf Stream. The jib,
about a 120, promptly unrolled all the way.
re .26:
I think it was the Pardey's who tried the zippered headsail. If I were
really poor and had no other alternative, I might try it. I'd rather
have two sails.
Alan
|
1647.29 | more on jib furling and reefing... | CAESAR::ANTONIADIS | | Thu Jan 10 1991 14:58 | 50 |
| re .23:
I have a Doyle genoa (150%, 680 sf) with foam luff on my Beneteau 42
"Halcyon". It is bent on a Profurl furling system. I sail my boat
single handedly a lot and I have several offshore passages under her
keel. I find that the foam does help shape the sail up to about 110%
Even at that it still is fuller than I would like, but I usually
manage to convert the fullness into twist with a rather flat foot.
I use this system exclusively when I sail single handed since I
can shorten sail without changing to a smaller jib. With a properly
designed and installed furling system there is no chafe on the line
and with proper line size it seems to me that the probability of
line breakage is negligible. I have sailed for days under partially
furled genoa in heavy weather, without the slightest sign of
chafe. Nevertheless, frequent inspections dont hurt. Conclusion:
The foam luff does help but do not expect nice sail shape beyond
25% furling ( and you probably would not bother with much less than
that amount of ail reduction).
Incidentally, I do rig an inner forestay when offshore and I bend
a staysail on it. I find that when the going gets really heavy
the staysail reduces the need to bend a storm jib,
the same way as my tripple reefed main
reduces (or at least postpones) the need to bend a trysail. But
between a, say 110% jib and the staysail there is a gap, that I
can only close by lowering the 150% jib and hoisting a 90%.
Unfortunately this is easier said than done if you have chosen to stay
with the partially furled jib until the conditions demand the 90%.
So I contend myself with the gap.
With respect to main reefing: My boat has slab reefing which is
entirely managed from the mast base. I have installed a main halyard
(self tailer) winch on the mast to supplement the reef winch that
is standard on the boat, right under the gooseneck on the mast.
I find that position a lot more manageable than on the boom. My single
handed reefing procedure consists of letting off the main sheet by
a reasonable amount, disregard the flogging, go to the mast and
let off the main halyard enough to be able to hook the ring to the
horn, tension the halyard (if the ring falls off I am there to hold it)
crouch under the boom and winch-in the reefing line as hard as
I can. Occasionally, I may have to run back and let off some more
sheet. I never use a reef relief tie around the boom, although if I was
sailing around the world I probably would. I have never seen any
chafe, even after two or three days of reefed sailing. The key is
tension. When enormous tension is applied to the reef line, which is needed
to absolutely flatten the foot, there is no play and no chafe, with
the reef grommet almost flat against the boom. The only chafe I have
seen was when the reef line was inproperly reeved and when tensioned
it came hard against the main clew car. So some attention is need here.
/Dimitri
|
1647.30 | solution for part of the reefing problems | SWAM2::HOMEYER_CH | No....but you can see it from here | Fri Jan 11 1991 13:15 | 9 |
| A simple solution to keep the reefing gromet in the horn while you are
raising the main is to attach a strong bungee cord about a foot above
the boom on the mast with a loop in the end of it. After hooking the
reef gromet in the horn, stretch the bungee cord loop down over the
horn. When you are not reefed keep the bungee hooked and it is out of
the way. This works very well on my Catalina 36.
Chuck
|
1647.31 | roller reefing vs. roller furling | AIADM::SPENCER | Commuter from the other Cape | Mon Jan 14 1991 10:10 | 19 |
| RE: .24,
Gene,
Years ago it seemed as though dealers were careful to distinguish between
roller furling and roller reefing. Today they seem to be used
interchangeably, which causes confusion.
In Cruising World, there's a picture of BOC boat Generali Concorde (Alain
Gautier, I recall) making >10kts to windward with *both* headsails reefed
using a drum-type roller system. He probably expects more weather and
strain on such a system than any of us are likely to see in our lives, so
I take that as a sort of ratification of the technology.
I'd definitely have one, and would certainly use it to reef in heavy
going, even at the price of having a somewhat flatter-cut sail than ideal
for light air going.
J.
|
1647.32 | Alternative to boom-mounted winches? | RIPPLE::ROTHENBER_DA | | Mon Jan 14 1991 10:44 | 32 |
| I got to thinking about the use of boom-mounted winches in jiffy
reefing systems. I certainly agree that this is the desirable way to
go. But sometimes there are physical (.13) or financial (sigh)
limitations. Here's a potential alternative.
In a previous life, I ran a charter fleet in San Diego with boats up to
46 feet. Admittedly, San Diego is a light air port, but just to be on
the safe side, we set up all our boats with jiffy reefing. With the
exception of a Cal-46, we didn't bother with boom mounted winches. We
found that by lifting the boom, either by hand or shoulder (works quite
easily on boats up to 30 feet), then taking tension on the outhaul, we
were able to suck the clew down to the boom. On larger boats, we would
take tension on the topping lift sufficient to bring the boom up to
meet the clew, which was being hauled in by hand.
This procedure does require two reasonably competent crew- one at the
mast, one at the helm- with increased burden at the helm if the boom
is being manually lifted. In particularly confused seas, a third
person may be necessary to manually lift a boom, bracing
himself/herself in the companionway or against the cockpit seats.
If the mastman needs some extra purchase to heave on the clew, then
consider taking a half turn on the boom-mounted cleat and pulling aft
You now have a two-to-one purchase. Of course, the mastman is now
in a slightly more precarious position, so care is essential. We used to
mount the cleats as far forward as possible on the boom to reduce the
distance from something solid to wrap your arms around.
To reiterate something I suggested before, practice frequently, and
you'll probably come up with your own variations that will make
reefing, and thus blustery sailing, safer and more fun.
|
1647.33 | I'll try again! | AKOCOA::DJOHNSTON | | Mon Jan 14 1991 12:24 | 33 |
| I honestly do not understand the attraction with boom mounted winches.
When reefing all pressure should be off the minsheet in order to not
force the strain to be picked up along the leech. This results in the
boom flapping and moving around, sometimes a lot. I wouldn't think
this would be the best platform for a person to grind from.
Also, what is inherently safer about going to the mast as opposed to
grinding from the cockpit reaching onto the cabin top?
As for economy, the same cabin top winch can be used for halyards.
Instead of buying a new winch, all you need is a turning block or two
and a sheet stopper. If you are installing a new winch anyway, the new
winch can serve several purposes from the cabin top and not be assigned
to the 5% of use we put on our boats while reefed.
Someone mentioned the additional friction. In my experience, this is
not an issue. All of our halyards are led aft the same way as the reef
lines and friction is not something we even have to think of. If I
were a cruiser I would do the same thing. The singlehanders in the BOC
race lead everything aft for ease of use. If it were easier or safer
to do this work at the mast, every one of them would do it that way.
If the issue is not trusting a sheet stopper over a lenght of time,
install a traditional cleat behind it. Use the sheet stopper while you
take the reefing line off the whinch, freeing it up for other uses, put
the tail on the cleat and then release the pressure on the sheet
stopper.
In short, I shake my head when reading this note. There is no function
that is better done at the mast when it can be done from the cockpit.
Dave
|
1647.34 | | MSCSSE::BERENS | Alan Berens | Mon Jan 14 1991 13:29 | 37 |
| re .32
Yes, if the boom is raised, it is much easier to put in the reef. Our
topping lift is simply a spare main halyard led to the cockpit. Slacking
the mainsheet and taking up on the topping lift raises the boom nicely.
If need be, our boom can be raised using the main halyard winch.
re .33:
>>> When reefing all pressure should be off the m[a]insheet in order to not
>>> force the strain to be picked up along the leech.
I agree, quite right.
>>> This results in the boom flapping and moving around, sometimes a lot.
True, but for a good solution see one of my earlier replies. Allowing
the boom to swing freely when reefing is dangerous whether the reefing
is done from the mast or the cockpit. The booms on some race-oriented
boats appear to be low enough to be a serious hazard to a crewperson
standing in the cockpit.
>>> There is no function that is better done at the mast when it can
>>> be done from the cockpit.
Again I agree, but in my experience on my boat (your experience on your
boat may differ) it is nigh on impossible to put a reef in the mainsail
properly without some work on the cabin top to ensure that the reef
lines are fair and that the foot of the sail is not pinched under a reef
line or against the clew car, to put in the clew lashing, etc. And I
don't know of any way to tie the loose folds of the sail to the boom
from the cockpit. If the loose foot isn't tied to the boom and if a wave
fills those folds, you may well have a seriously torn sail.
Again, what works and doesn't work may depend on your particular boat
and the particular sailing you do.
|
1647.35 | More detail on multiple reef points? | TRCA03::HALSEY | I'd rather be sailing! | Mon Jan 21 1991 19:47 | 18 |
| The ideas presented in this topic have been just great. They have
covered different sizes of boats, using a variety of different
hardware (I prefer the cheekblock method myself, leading back to the
cockpit).
Unfortunately one thing that really didn't get too much coverage was
how to handle 'multiple' reefing points! I may have missed a great
solution in the text, but most of them seemed to focus on 1 reef point.
Would the apparent solution be to have one line threaded for each reef
point, or has someone figured out a way to use one line for two or more
reef points? My main has three, although it initially came with one.
My current reefing method is not very good, but it gets the job done.
Obviously, the luff is not the problem, it's the leech that makes it
interesting.
Bob Halsey
|
1647.36 | have them all ready to use | MSCSSE::BERENS | Alan Berens | Tue Jan 22 1991 12:37 | 15 |
| re .35:
Trying to reeve a clew reef line in rough conditions is a more than a
little dangerous and something I would attempt only in desperation. A
reef clew is typically three feet or so above the boom. Trying to get a
line through a smallish grommet in a wildly flogging sail with the boat
gyrating under you isn't easy, especially when it is the second or third
reef.
We have three mainsail reefs and have clew reef lines permanently in
place for each. The hardware for three reefs does become cluttered (but
since our clew lines are internal to the boom our situation could be
worse). We've used the third reef once in eleven years, but that time I
was most glad to have it.
|
1647.37 | to reef or not to reef? | CAESAR::ANTONIADIS | | Tue Jan 22 1991 17:44 | 22 |
| re:35
I have used with mixed results a continuous lanyard loop running
through the 2nd and 3rd reef clue grommets. The length of the
loop is such that the lanyard is normally flat against the leech
of the main. to go from 2nd to 3rd reef you tie the loose #1 reef
line to the lanyard and hoist it through the #3 grommet and then
back down to tie to the boom. The main problem with this system
is that the loop tends to sometimes catch the boom when hoisting
the main.
re: 36
If the sail is flogging while you are setting the reef you must have
waited too long to set it. The above technique works fine when the main
is under control and over the cockpit which means you may have to
change course briefly to do it. I have seen racing boats use this
technique for going from reef # 1 to #2. They use the flattening
reef as the loose reefline then. However, I use the second reef too
often and I would not give it up from been ready to use all the time.
/Dimitri
|
1647.38 | Messenger Line | STEREO::HO | | Wed Jan 23 1991 13:36 | 27 |
| I've used the messanger line reeved through the 2nd and 3rd reef clews
to which Dimitri refers. As he states, there are pluses and minuses to
doing this. The plus is that one less reef line is needed although the
cheek block and other hardware is still necessary. For a deep third
reef it's a long piece of line that's saved. The minus is that it's
still awkward to reeve the reef line although not as awkward as doing
it without the messanger line.
For persons of average stature such as myself, even with the boom
strapped in amidships and the sail full, I still have to work with my
hands above my head. It is very difficult to tie two lines together
under these circumstances. The procedure that evolved after numerous
fiascos was to leave the messenger line as a continuous loop connecting
the 2nd and 3rd reefs and never to untie it. To reeve the reef line I
taped it to the messenger with the two lines parallel to each other.
Then pulling the messanger line one full revolution brought the the
tail of the reef line up to the reef clew and down the other side. If
it was too wet for tape, a twist tie from a garbage bag also worked,
especially if placed just behind the whipping on the reef line.
With experience we found the easiest way to avoid gymnastics on the
boom end was to pick which two of the three reef points we wanted for
the day and to reeve those. Either flattener and #1 or #1 and #2. If
we had chosen #1 and #2 and it lightened up later, it was easy to
unstring the #2 and put it into the flatener clew.
- gene
|
1647.39 | | MSCSSE::BERENS | Alan Berens | Wed Jan 23 1991 17:10 | 11 |
| re -.1:
Hmmm, is the cost saving really worth the extra risk? Maybe if you're
sailing in protected waters and not very rough seas, but (IMHO)
definitely not when sailing offshore or shorthanded or at night. If the
clew reef line you're depending on for multiple reefs fails (due to
chafe, whatever), you could be in really serious trouble. Far better
(IMHO) to have multiple reefs, each with a separate line. There is
increased safety in redundancy.
Alan
|
1647.40 | internal reefing ideas? | CACHE::THOMPSON | Don Thompson | Thu May 02 1991 00:53 | 10 |
| A friend has an internal rigged boom with four sheaves at each end.
There is a track with five movable deadeyes on the bottom of the
boom. He would like to know how to rig this system for reefing
lines, outhaul, topping lift, etc. with lines leading to cockpit.
I've never seen the boat, so can not give any great details.
Any ideas will be appreciated.
Don
|
1647.41 | How's this? | MILKWY::WAGNER | | Thu May 02 1991 13:03 | 22 |
|
This sounds like mine, except I've got fixed pad eyes; cheezier
than movable eyes.
Are there cleats up front? Something's gonna have to hold these
lines. Anyway, string the lines from front out thru back blocks, up
thru the reef grommets, down to the eye below the grommet. Slightly aft
is necessary to pull some of the fullness out of the foot. The owner
can tweak as necessary. 4 lines gives you outhaul, flattener, 1st reef
and 2nd reef. No flattener? 3rd reef!
I'd string the topping lift down the mast if possible- otherwise
use one of the 4, heading straight up- less weight aloft, I guess-
I myself like lotsa reefability.
And you've got your nice little figure-8's (or somesuch) at the
deadeyes. Cleat up front as necessary, and off you go, on those small
craft warning days, as the stinkpotters watch jealously from ashore.
Must be plain hell ashore...!
Scott_who'd_rather_be_messing_about
|
1647.42 | Just a wee bit more... | CACHE::THOMPSON | Don Thompson | Fri May 03 1991 01:23 | 11 |
| Yes, he does have jam cleats at the forward end of the mast, so these
lines don't come aft to the cockpit? If one was to lead them aft, one
must remove the jam cleats and add turning blocks at the base of the
the mast and aft to cabin mounted jam cleats. Is this right?
Also, is there any preference too which sheave I use for any line, ie,
an inner sheave for the outhaul for alignment?
Thanks, there is a great wealth of info in this conference.
Don
|
1647.43 | | HAMPS::JORDAN | Chris Jordan, Digital Services - Office Consultant, London | Fri May 03 1991 05:41 | 29 |
| .42� must remove the jam cleats and add turning blocks at the base of the
.42� the mast and aft to cabin mounted jam cleats. Is this right?
You will need more than just jam cleats if you bring them back. There
will be a fair amount of friction, and you only need to use the reefing
lines when it starts to blow and rock about a bit!
I have seen a boat with the reef lines out through blocks at the front
of the boom, down to turning blocks at the foot of the mast; then back
through a snatch jamb cleat to a winch. If you have the main hallyard
next to the reef lines it helps as well..... let one go, pull the other
in.
---------------
But that only deals with the rear edge of the sail? What about pulling
the front edge down? This might be done by walking up to the mast, and
putting the sail onto a stainless hook on the side of the boom - or
else you need ANOTHER line to control the front.
There is even a picture in one of last month's UK magazines on a new
boat that had the reefing lines rigged as:
From cockit, past winch; through snatch jamb cleat; round block at foot
of mast, up through grommet on leading edge of sail, back down to block
on the boom; round that; along to the back of the boom; round another
turning block and up to the grommet in the trailing edge of the sail,
back down to a dead eye on the boom.
In theory - let the hallyard down by two feet, pul the reefing line and
its all done - from the cockpit.
|
1647.44 | That's the way it is. | MILKWY::WAGNER | | Fri May 03 1991 13:07 | 16 |
|
Yep you've got it. I have a dedicated winch right under the
gooseneck for these lines. If I led them aft, the total lines would
approach a dozen. Scary, financially.
I use the inner sheaves for outhaul & flattener, just to keep the
snags to a minimum. The inners will probably be tightened before the
outers, so the outers won't draw them in. Gravity and ship's motion
would tend to let inners get sucked into outer sheaves. And alignment,
yep, you don't want the outhaul yanked any more sideways than
neccessary.
But what a spaghetti-mess up front when they're being used! Best to
coil first, unless your helmsperson is getting upset...
Scott.
|
1647.45 | More on reefing | OTOA01::MOWBRAY | from Newfoundland | Mon May 13 1991 20:00 | 24 |
| The June 1990 edition of "Cruising World" (I think that is the right
edition) has a very good article on reefing. 1 line, 2 lines, internal
sheaves, external blocks etc.
I particularly liked an arrangement that was "sort of" single line and
also led back to the cockpit.
In essence it was :
1 line reeved from a pad eye on the boom up through the clew and down
from the sail to a cheek block. From the cheek blok, the line goes
forward to one end of a block and tackle.
another line reeved through the tack from a pad eye on the mast, down
to a cheek block on the boom and then to the other end of the block and
tackle.
the bitter end of the block and tackle leads forward to the mast where
it is turned on a block and leads to the cockpit.
This then gives the mechanical advantage of the block and tackle to the
single line reefing system.
I am going to experiment with this system on a small boat this summer
and if it works I will put it on mine.
|
1647.46 | Hood Stoboom | ICS::WANNOOR | | Sat Nov 21 1992 01:47 | 8 |
| Has anyone had experience with the Hood Stoboom? This looks like an
excellent compromise; I believe it is intended as a furler/reefer, and
because the mainsail furls into the boom, it is possible to use a
battened or non-battened sail.
From what I saw at the Newport boat show, the only things that may be
an issue would be 1) chafing at the boom's exit slot, and 2) what
happens if the main sheet parts?
|
1647.47 | Stoboom Not for offshore. | TOLKIN::HILL | | Fri Dec 11 1992 15:08 | 10 |
| I looked at the Stowboom, and asked what to me was the obvious
question, "how do you keep the main flat when you reef"? The answer was
that you can't!! The tack runs through a plastic track which can move
aft, the leach is just wrapped around, therefore there is nothing
holding the leach and luff apart.
I would not want to put it on a sailboat which was expected to go
offshore.
Bill
|
1647.48 | Genoa luft pad | GRANMA::HAJOHNSON | | Tue Feb 16 1993 13:37 | 12 |
| Note .29 mentions the use of foam pads to shape the roller genoa when
only partially deployed.
At a seminar at one of the Annapolis sail lofts, they recommended these
highly both for performance as well as sail life. The cost is $8 per
foot. For my genoa, this is about $400.
In talking to another sailmaker, they use layers of cloth rather than
foam because they say the foam deteriorates. This is not any heavier
and the cost for my sail is a reasonable $125.
Has anyone had pro or con experiences with either of these?
|